Median: Describing a system with headmates that are non-distinct; in most cases, this means that headmates have the same core identity while being slightly different- eg: "I'm [host] but more protective." Also called mid-continuum in older communities
Red and purple were chosen because you can consider them "opposite ends" of the typical rainbow, at least in terms of Roy G. Biv. Because being median is such a varied experience for everyone who uses that label, we felt that connecting this flag to something like the rainbow would be a good idea
A 5 striped flag, with all the stripes vertical. The leftmost and rightmost stripes are red, with the large center stripe being purple. Between them are thin white stripes (or transparency, for the transparent version)